Sensitive Label-Free Biomolecular Detection Using Thin Silicon Waveguides
Figure 7
Sensor designs with double spiral waveguide geometries providing increased sensing path length while maintaining a compact sensor footprint. (a) MZI sensor with 2 mm sensing path length contained within a circular 150 m diameter area. (b) Spiral cavity ring resonator design with 1.3 mm sensor length contained within a circular 110 m diameter area.
